Air and fuel heater



April 28, 1-925. 1,535,095

W. J. BLIFFERT AIR AND FUEL HEATER Filed Jan. 28, 1924 M 9 I: -1- /0 l /7 A; v 1/ a Al I I I "3L? f 3 l I IN VEN TOR.

A TTORNEYS,

l atented Apr. 28, 1925.

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WALTER J. BLIFFERT, F MILYVAUKEE, VTISCONSIN.

AIR AND FUEL HEATER.

Application filed January 28, 1924. Serial No. 689,077.

a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and. State of lVisconsin, have invented new 1 and useful Improvements in Air and Fuel l-leaters. of which the following is a description, reference beinghad to the accompanying drawings, which are a part of this specitication.

This invention relates to improvements in carburetor air heating devices.

It is one of the objects of the present invention to provide a device which will conduct hot gas from the exhaust of a vehicle engine and introduce it against the exterior (if a carburetor bowl to heat the same.

A further object of the invention is to provide a device which will-introduce heated air directly into a carburetor, thereby facilitating the vaporization of the fuel within the carburetor.

A further object of the invention is to provide an attachment for an engine exhaust pipe adapted to conduct air to the carburetor and arranged so that the air conducted by the'attachment must come in contact with the exhaust pipe and be heated thereby.

A further object of the invention is to provide a device of the class described which can be readily attached to a motor vehicle engine without any material alteration thereof.

A further object of 'the invention is to provide a device of the class described which is of very simple construction, is inexpensive to manufacture is strong and durable, and is well adapted for the purpose described.

With the above and other objects in v ethe invention consists of the improved carburetor air heating device, and its parts and combinations as set forth in the claims and all equivalents thereof.

In the accompanying drawing, in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a side view of the improved carburetor air heating device, the same being shown in connection with an engine exhaust pipe and a carburetor, parts being broken away and shown in section;

F ig. 2 is a detail view of the flexible tubing' forming part of the device; and

Fig. 3 is a vertical sectional view taken on line of Fig. 1.

Referring now more particularly to the accompanying drawing, it will be seen that the numeral 5 represents the exhaust inanitold of a motor vehicle engine, said man's fold havingan exhaust pipe portion 6.

The invention comprises a tubular pipe 7 adapted to be secured about the exhaust pipe 6 adjacent: its point of junction with the manifold. The upper portion of the pipe 6 is enlarged, as shown in Fig. 3, and is formed in two parts, the portion 8 being clamped to the major portion 9 by means of screw bolts 10 which passthrougrh flanged portions 1.1 provided therefor. The lower portion of the enlarged part of the pipe 7 fits tightly against the exhaust pipe so as to prevent the admittance of air therein. However, an opening 12 is provided in the upper portion to admit air and the air is free to circulate through the pipe, passing around and coming into contact with the exhaust pipe, as shown by the arrows in Fig: 3. The lower ends of the tubular pipe 7 connects with the carburetor 18 of the motor vehicle engine and opens into the same.

A flexible tubular member 1a is also provided, said member being shown in detail in Fig: 2. One end of said member 14; is provided with an L-shaped head portion 15 which is threaded, as at 16, while the other end of the member is open. The major portion of said member 1 1 is adapted to be confined within the pipe 7, as shown in Fig. 1, and its upper end portion passes through an aperture 17 formed in one side of the enlarged portion. 9 of the pipe 7. The head portion 15 is screwed into an opening provided therefor in the exhaust manifold. The opposite end portion of the flexible member 14 passes through an aperture 18 in the lower part of the pipe 7 and the open end of the flexible member has an angular disposition adjacent the carburetor bowl 19 From the foregoing it will be seen that hot is taken directly from the exhaust manifold, by the flexible tubing, and is discharged against the surface of the carburetor bowl. The pipe 7 takes in air through the opening 12 and said air must necessarily come into contact with the portion of the exhaust pipe surrounded and be heated thereby. Also, the air is heated during its travel through the pipe by contact with the flexible tubin' The heated air is then discharged from the pipe T'into the interior of the carburetor. It should be further noted that the lower end of the flexible tubing is provided. with a cap 20 normally secured thereto by a wire 21, as shown in Fig. 1. In hot weather, it has been found that the fuel within the carburetor will vaporize readily and it is then not necessary to heat the carburetor bowl. lVhen this is the case, the lower end of the flexible tubing can be closed by said cap which is held in place by ,means of a cotter pin 22, as shown in Fig. 2.

Obviously, the device assists n'iaterially in the vaporization of fuel within the carburetor, is of very simple and novel construction, and is well adapted for the'pnrpose set forth.

What I claim as my invention is:

1. An attachment for an internal combustion 'engine including an exhaust-manifold having an aperture therein, and a carburetor, comprising a pipe opening into the carburetor and having an enlarged upper end POIilOlhSdlCl enlarged portion surrounding a portion of the exhaust manifold, and

a tu u ar member within thepipe and entering the aperture in said exhaust manifold, the lower end portion of said tubular member projecting through the pipe adjacent the carburetor bowl.

. 2. An attachment for an internal combustiOIi engine including an exhaust manifold having an aperture therein, and a carburetor, comprising a pipe connected to and opening into the carburetor and having an ing the aperture in the exhaust manifold,

and the other end portion projecting through the pipe adjacent the carburetor bowl.

The combination with a carburetor and an engine exl'iaust manifold, of a pipe for conveying warm air into the carburetor, and a tubing having its major portion confined within said Warm air pipe for directing e X haust gas against the exterior of the carburetor bowl.

In testimony whereof, I afiix my signature.

WALKER J. BLIFFEERT. 

